<script type="module">
  import {SerialService} from '/gen/third_party/blink/public/mojom/serial/serial.mojom.m.js';

  const interceptor =
      new MojoInterfaceInterceptor(SerialService.$interfaceName);
  interceptor.oninterfacerequest = (e) => {
    window.parent.postMessage({
      type: 'Attach',
      handle: e.handle
    }, '*', [e.handle]);
  };
  interceptor.start();

  // Wait for a call to getPorts() to complete to ensure that the interface
  // handle has been bound to the parent context.
  await navigator.serial.getPorts();

  window.parent.postMessage({ type: 'Ready'}, '*');
</script>
